I usually made a little whistling "pss-pss" noise but after awhile the activity itself becomes a cue, so no diaper and in position over the toilet. I did ec part time while my baby was little and just did it at each diaper change and my som regularly peed and pooped in the potty when offered. I didn't change a poopy diaper for about 7 months, it was amazing. That was for my youngest, I waited a bit long with my oldest and it wasn't as effective.
I usually made a little whistling "pss-pss" noise but after awhile the activity itself becomes a cue, so no diaper and in position over the toilet. I did ec part time while my baby was little and just did it at each diaper change and my som regularly peed and pooped in the potty when offered. I didn't change a poopy diaper for about 7 months, it was amazing. That was for my youngest, I waited a bit long with my oldest and it wasn't as effective.